This article analyses the possibility of integrating new learning practices into health-related postgraduate programmes to enable students to acquire specific competencies in their field of study while improving other cross-disciplinary competencies related to the use of elements inherent to the information and knowledge society. To that end, a decision was taken to develop a Mediterranean Diet Wiki experience; a collaborative activity on the different aspects of the Mediterranean diet, using Wikispaces. The activity had two objectives. First, to develop a holistic, transdisciplinary vision of the phenomenon of nutrition, in terms not only of its relationship to health, but also of its importance as a social, cultural and economic component. And second, to have a set of up-to-date, easy-to-access bibliographic resources available on the topic, which would prove useful throughout the students’ educational process. Students and lecturers on different educational programmes took part in the experience. While focusing on a field of study related to their respective subjects, the experience offered them the opportunity to work in a shared space towards a common goal, by providing them with access to a range of multidisciplinary information and a more holistic vision of the Mediterranean diet. On completion of the experience, activity assessment and wiki participation data were analysed, as were data obtained from the anonymous questionnaire. The results showed that the Mediterranean Diet Wiki was an effective tool for approaching the phenomenon of nutrition from different angles, as well as a useful system for working on cross-disciplinary competencies such as the mastery of ICTs, searching effectively for bibliographic references, and collaborative work.